Sawmill.



PATENTED FEB. 17, 1903.

W. E. JONES.

2 SHEETS-SHEET 2.

H0 MODEL.

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In: NQHRS PETERS o0. PHGTO-UTN Journaled in sliding boxes 17 is shaft18, car- UNITED STATES PATENT OFFICE;

WILLARD E. JONES, OF OLEARLAKE, WASHINGTON.

SAWMILL.

SPECIFICATION formingpart of Letters Patent N 0. 720,815, dated February17, 1903.

Application filed September 30, 1902. Se i l No. 125 ,360. (No model.)

To all whom it may concern;

Be it known that I, WILLARD E. J ONES, a citizen of the United States,residing at Clearlake, county of Skagit, and State of Washington, haveinvented certain new and useful Improvements in Sawmills, of which thefollowing is a specification.

My invention relates to sawmills.

The object of the invention is the provision of an improved, novel, andmore efficient sawmill, but more particularly to provide novel set-workswherein provision will be made for rapid receding of the knees and firmlocking thereof where adjusted and to provide a novel and improved brakeor look which will hold the friction-wheel, but which will be releasedon the operation of the lever to cause the feeding of the knees on thehead-blocks.

To accomplish the foregoing and other objects not specificallymentioned, I provide certain improved mechanisms fully set forthhereinafter and recited in the appended claims.

In the accompanying drawings, Figure 1 is a plan; Fig. 2, a sideelevation, dotted lines representing the driving-rope pulleys; and Fig.3, a diagrammatic view of the sheaves and rope.

The numeral 1 designates the carriage, having head-blocks 2, and 3 isthe line-shaft. The knees 4 are advanced by the screws 5, having gears 6meshing with gears '7 on the line-shaft, and on the line-shaft is thegear 8.

Journaled in stationary boxes 9 is the shaft 10 of the friction-Wheel11, which has pinion 12 meshing with gear 8 and through which motion isimparted to the knees to advance and recedethe same.

Journaled in sliding boxes 13 is a shaft 14, carrying friction-wheel l5and rope-pulley 16.

rying friction-wheel 19, considerably smaller than wheel 15, andrope-pulley 20. The friction-wheels l5 and 19 are adapted to be made tobear against the friction-wheel 11 at different times, the wheel 19being for advancing the knees and the wheel 15 for receding them, and byreason of the wheel 15 being considerably larger than the wheel 19 theknees can be receded much faster than advanced, which is advantageous.

Pivoted at 21 is a brake-beam 22, having a shoe 23, adapted to bearagainst the face of the wheel 11, and 2a is an eccentric on a shaft 25,and said eccentric is connected by rod 26 to the beam 22 by theadjustable connection 27.

For moving the sliding boxes 13 and 17 I provide pivoted levers 28 and29, connected by'rod 30, which also connects to lever 31 on theeccentric-shaft, and 32 is an ordinary type of hand-lever for operatingthe rod and which is locked by notched segment 33.

The driving-rope pulleys are shown at 34 and 35, over which passes therope 36, said rope passing over lead-pnlleys 37 and 38 and under therope-pulley 16 and over rope-pulley 20 and under an idler rope-pulley39.

The knees and log will remain firm during the sawing operation, becausethe brakebeam 22 is normally locked against the brake- Wheel 11, and thewheels 15 and 19 are both out of contact with the wheel 11. YVhen it isdesired to advance the knees on the headblock, the lever 32 ismanipulated to shift the sliding boxes and bring the friction-wheel 19into contact with wheel 11, whereupon wheel 11 will be turned and theknees advanced. Moving the lever in the opposite direction brings thewheel 15 into contact with wheel 11 and causes the knees to recede.

Movement of the lever in either direction from its normal or neutralpoint will cause the turning of the eccentric and release of thebrake-knee from wheel 11; but when the lever is in its upright positionthe brake is applied to the wheel 11. Thus the sawing of planks of equalthickness is insured at all times, as there can be no creeping of theknees and log.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with the knees of a sawmill, of normally inoperativemeans for advancing and receding said knees,independent devices adaptedto independently engage and operate said normally inoperativekneesadvancing means, a brake or lock for said mechanisms, and means forreleasing said brake or look on bringing either the advancing orreceding devices into engagement with the knees advancing and recedingmeans.

2. The combination with the knees of a sawmill, a wheel for advancingand receding said knees, and advancing and receding wheels adapted toindependently engage said wheel, of a brake or look for said wheel, andmeans for releasing said brake or lock on bringing either of saidadvancing or receding Wheels into engagement with the wheel whichadvances or recedes the knees.

3. The combination with the knees of a sawmill, of a wheel for advancingand receding said knees,independent advancing and receding wheels toengage with the wheel aforesaid, independentlyofeachother,meansforshifting said advancing and receding wheels simultaneously so thatwhen one of them is brought into engagement with the wheel for settingthe knees, the other is thrown out of engagement therewith, anda brakeor lock actuated by said means and securing the knees-advancing wheelwhen the other wheels are out of engagement therewith and automaticallyunlocked or released on shifting said wheels.

4. The combination with the knees ofa sawmill, of a wheel for advancingand receding said knees, independent wheels adapted to engage therewithat different times, one for advancing the knees and the other forreceding the knees, an eccentric, a brake-beam governed by the eccentricand adapted to lock the knees-operating Wheel, and means for shiftingthe advancing and receding wheels simultaneously to bring one or theotherinto engagement with the knees-operating wheel, said means alsooperating the eccentric to cause disengagement or release of the brakeon shifting the said wheels.

In testimony whereof I hereunto affix my signature in presence of tWowitnesses.-

WILLARD E. JONES.

Witnesses:

WILLIAM A. BoDDY, C AS. E. LIND.

